#3515 · 🐝 bees, wasps & ants

Oak Marble Gall Wasp

🇳🇱 Knikkergalwesp ·Andricus kollari

🐝 Bees, wasps & ants 📍 in the Netherlands

8 photos from iNaturalist (Creative Commons) · credits & licences

1. © Luis Fernández García · CC BY-SA 4.0
2. © Rasbak · CC BY-SA 4.0
3. © Gilles San Martin · CC BY-SA 4.0
4. © Andrea Kreuzhage · CC BY-NC 4.0
5. © Mamalomele · CC BY-NC-SA 4.0
6. © mojanne · CC BY-NC 4.0
7. © AnneTanne · CC BY-NC 4.0
8. © A Emmerson · CC BY-NC 4.0

what is it?

Andricus kollari is species of wasp which causes the formation of marble galls on oak trees.

base stats

NL sightings 484iNaturalist, research grade
worldwide 11,026iNaturalist observations

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

Spotted 484 times in the Netherlands on iNaturalist: the #13 most seen of the bees, wasps & ants in NL.
11,026 observations worldwide on iNaturalist.
Scientifically named by Theodor Hartig in 1843 (183 years ago).